Voter data on 1.8M Chicagoans left exposed on online storage service

Personal data on more than 1.8 million Chicagoan voters was found exposed on a cloud-based storage site, available to anyone for downloading, researchers from UpGuard’s Cyber Risk Team have reported.

According to an article posted Thursday on UpGuard’s Breach analysis blog, the data repository is owned and operated by Omaha, Neb.-based voting machine firm Election Systems & Software (ES&S), and appears to have been created around the time of the 2016 U.S. election. The data breach involves voter names and ID numbers, addresses, phone numbers, driver’s license numbers, and the last four digits of Social Security numbers.